# What does Linear use? Linear (linear.app) shows public evidence of 28 tools, according to runsonwhat (last checked 2026-10-04). ## Edge & Hosting | Tool | Category | Evidence | Since | |---|---|---|---| | [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare) | CDN & Edge | DNS records, Website code | | | [Amazon Web Services](https://www.runsonwhat.com/reverse/aws) | Hosting & Cloud | Website code | | | [Google Cloud](https://www.runsonwhat.com/reverse/gcp) | Hosting & Cloud | Website code | | | [Vercel](https://www.runsonwhat.com/reverse/vercel) | Hosting & Cloud | DNS verification records | | ## Application | Tool | Category | Evidence | Since | |---|---|---|---| | [React](https://www.runsonwhat.com/reverse/react) | Frontend | Website code | | | [Next.js](https://www.runsonwhat.com/reverse/nextjs) | Frontend | Website code | | | [Anthropic](https://www.runsonwhat.com/reverse/anthropic) | AI | DNS verification records | | | [OpenAI](https://www.runsonwhat.com/reverse/openai) | AI | DNS verification records | | | [Stripe](https://www.runsonwhat.com/reverse/stripe) | Payments & Billing | DNS verification records, Website code | | | [Algolia](https://www.runsonwhat.com/reverse/algolia) | Search | Website code | | | [MongoDB Atlas](https://www.runsonwhat.com/reverse/mongodb) | Backend & Database | DNS verification records | | | [MCP Registry](https://www.runsonwhat.com/reverse/mcp-registry) | AI | DNS verification records | | ## Data & Observability | Tool | Category | Evidence | Since | |---|---|---|---| | [LaunchDarkly](https://www.runsonwhat.com/reverse/launchdarkly) | Flags & Experiments | DNS verification records | | ## Go-to-market | Tool | Category | Evidence | Since | |---|---|---|---| | [HubSpot](https://www.runsonwhat.com/reverse/hubspot) | Sales & CRM | Email records, Website code | | | [Sanity](https://www.runsonwhat.com/reverse/sanity) | Website & CMS | Website code | | ## Company Ops | Tool | Category | Evidence | Since | |---|---|---|---| | [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | DNS verification records | | | [Google Workspace](https://www.runsonwhat.com/reverse/google-workspace) | Workspace | Email records, Website code | | | [Apple Business](https://www.runsonwhat.com/reverse/apple) | Workspace | DNS verification records | | | [Amazon SES](https://www.runsonwhat.com/reverse/ses) | Email Delivery | Email records, Website code | | | [DocuSign](https://www.runsonwhat.com/reverse/docusign) | Finance & Legal | DNS verification records, Website code | | | [Zoom](https://www.runsonwhat.com/reverse/zoom) | Collaboration | DNS verification records | | | [Postmark](https://www.runsonwhat.com/reverse/postmark) | Email Delivery | Email records | | | [Slack](https://www.runsonwhat.com/reverse/slack) | Collaboration | DNS verification records | | | [Cursor](https://www.runsonwhat.com/reverse/cursor) | Dev Tools | DNS verification records | | | [Notion](https://www.runsonwhat.com/reverse/notion) | Collaboration | DNS verification records | | | [DMARC Digests](https://www.runsonwhat.com/reverse/dmarcdigests) | Security & Compliance | Email records | | | [Rippling](https://www.runsonwhat.com/reverse/rippling) | People & HR | DNS verification records | | ## Hiring at Linear 31 open roles on its public job board: Engineering 7, Product & Design 7, Customer Success 5, Marketing 4, Sales 4, Data & AI 2. ## FAQ ### What tools does Linear use? As of October 2026, runsonwhat has found 28 tools at Linear (linear.app) in public records. Edge & Hosting: Cloudflare, Amazon Web Services and Google Cloud. Application: React, Next.js and Anthropic. Data & Observability: LaunchDarkly. Go-to-market: HubSpot and Sanity. Company Ops: Microsoft 365, Google Workspace and Apple Business. Last checked October 4, 2026. ### What cloud does Linear run on? Linear uses Amazon Web Services for hosting and cloud infrastructure, alongside Google Cloud and Vercel, according to runsonwhat (October 2026). runsonwhat found Amazon Web Services through Amazon Web Services code on linear.app. Amazon Web Services is used by 143,970 companies runsonwhat tracks. ### What CRM does Linear use? Linear uses HubSpot for its CRM, according to runsonwhat (October 2026). runsonwhat found HubSpot through email records that authorize HubSpot and code on linear.app. HubSpot is used by 89,933 companies runsonwhat tracks. ### What email provider does Linear use? Linear uses Microsoft 365 for email and office software, alongside Google Workspace and Apple Business, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through a DNS verification record for Microsoft 365. Microsoft 365 is used by 694,553 companies runsonwhat tracks. ### What payment provider does Linear use? Linear uses Stripe for payments and billing, according to runsonwhat (October 2026). runsonwhat found Stripe through a DNS verification record for Stripe and code on linear.app. Stripe is used by 25,284 companies runsonwhat tracks. ### What is Linear's website built with? Linear uses Sanity for its website, according to runsonwhat (October 2026). runsonwhat found Sanity through Sanity code on linear.app. Sanity is used by 4,480 companies runsonwhat tracks. ### Does Linear use Cloudflare? Yes. runsonwhat found Cloudflare at Linear through DNS records that point at Cloudflare and code on linear.app. Cloudflare is a CDN & Edge tool used by 680,155 companies runsonwhat tracks. ### Does Linear use AI tools? Yes. runsonwhat has found Anthropic, OpenAI and MCP Registry at Linear; Anthropic, for example, through a DNS verification record for Anthropic. AI services called only from servers leave no public trace, so Linear may use more AI tools than these. ### Is Linear hiring? Yes. As of October 2026, Linear has 31 open roles on its public Ashby job board, most in engineering (7), product & design (7) and customer success (5). 5 were posted in the last 30 days. ### Which companies have a tech stack similar to Linear's? The companies with the stacks most like Linear's are AppsFlyer, Truthifi, Layout and Paper Lantern, according to runsonwhat (October 2026). Each shares 6 to 13 tools with Linear, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices. ### How does runsonwhat know what Linear uses? runsonwhat reads public records only. Of the 28 tools at Linear, 17 were found through DNS records, 6 through code on linear.app and 5 through email records. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and linear.app about monthly. --- Source: runsonwhat, https://www.runsonwhat.com/company/linear.app (updated October 2026). Counts are companies with direct public evidence of the tool (DNS records, certificates, website code, a real-browser crawl, subprocessor lists), so they are lower bounds. Methodology: https://www.runsonwhat.com/methodology.